1 /* coff object file format 2 Copyright 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 3 1999, 2000, 2001, 2002, 2003, 2004, 2005 4 Free Software Foundation, Inc. 5 6 This file is part of GAS. 7 8 GAS is free software; you can redistribute it and/or modify 9 it under the terms of the GNU General Public License as published by 10 the Free Software Foundation; either version 2, or (at your option) 11 any later version. 12 13 GAS is distributed in the hope that it will be useful, 14 but WITHOUT ANY WARRANTY; without even the implied warranty of 15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 16 GNU General Public License for more details. 17 18 You should have received a copy of the GNU General Public License 19 along with GAS; see the file COPYING. If not, write to the Free 20 Software Foundation, 51 Franklin Street - Fifth Floor, Boston, MA 21 02110-1301, USA. */ 22 23 #ifndef OBJ_FORMAT_H 24 #define OBJ_FORMAT_H 25 26 #define OBJ_COFF 1 27 28 #include "targ-cpu.h" 29 30 #include "bfd.h" 31 32 /* This internal_lineno crap is to stop namespace pollution from the 33 bfd internal coff headerfile. */ 34 #define internal_lineno bfd_internal_lineno 35 #include "coff/internal.h" 36 #undef internal_lineno 37 38 /* CPU-specific setup: */ 39 40 #ifdef TC_ARM 41 #include "coff/arm.h" 42 #ifndef TARGET_FORMAT 43 #define TARGET_FORMAT "coff-arm" 44 #endif 45 #endif 46 47 #ifdef TC_PPC 48 #ifdef TE_PE 49 #include "coff/powerpc.h" 50 #else 51 #include "coff/rs6000.h" 52 #endif 53 #endif 54 55 #ifdef TC_SPARC 56 #include "coff/sparc.h" 57 #endif 58 59 #ifdef TC_I386 60 #include "coff/i386.h" 61 62 #ifdef TE_PE 63 #define TARGET_FORMAT "pe-i386" 64 #endif 65 66 #ifndef TARGET_FORMAT 67 #define TARGET_FORMAT "coff-i386" 68 #endif 69 #endif 70 71 #ifdef TC_M68K 72 #include "coff/m68k.h" 73 #ifndef TARGET_FORMAT 74 #define TARGET_FORMAT "coff-m68k" 75 #endif 76 #endif 77 78 #ifdef TC_OR32 79 #include "coff/or32.h" 80 #define TARGET_FORMAT "coff-or32-big" 81 #endif 82 83 #ifdef TC_I960 84 #include "coff/i960.h" 85 #define TARGET_FORMAT "coff-Intel-little" 86 #endif 87 88 #ifdef TC_Z80 89 #include "coff/z80.h" 90 #define TARGET_FORMAT "coff-z80" 91 #endif 92 93 #ifdef TC_Z8K 94 #include "coff/z8k.h" 95 #define TARGET_FORMAT "coff-z8k" 96 #endif 97 98 #ifdef TC_H8300 99 #include "coff/h8300.h" 100 #define TARGET_FORMAT "coff-h8300" 101 #endif 102 103 #ifdef TC_H8500 104 #include "coff/h8500.h" 105 #define TARGET_FORMAT "coff-h8500" 106 #endif 107 108 #ifdef TC_MAXQ20 109 #include "coff/maxq.h" 110 #define TARGET_FORMAT "coff-maxq" 111 #endif 112 113 #ifdef TC_SH 114 115 #ifdef TE_PE 116 #define COFF_WITH_PE 117 #endif 118 119 #include "coff/sh.h" 120 121 #ifdef TE_PE 122 #define TARGET_FORMAT "pe-shl" 123 #else 124 125 #define TARGET_FORMAT \ 126 (!target_big_endian \ 127 ? (sh_small ? "coff-shl-small" : "coff-shl") \ 128 : (sh_small ? "coff-sh-small" : "coff-sh")) 129 130 #endif 131 #endif 132 133 #ifdef TC_MIPS 134 #define COFF_WITH_PE 135 #include "coff/mipspe.h" 136 #undef TARGET_FORMAT 137 #define TARGET_FORMAT "pe-mips" 138 #endif 139 140 #ifdef TC_TIC30 141 #include "coff/tic30.h" 142 #define TARGET_FORMAT "coff-tic30" 143 #endif 144 145 #ifdef TC_TIC4X 146 #include "coff/tic4x.h" 147 #define TARGET_FORMAT "coff2-tic4x" 148 #endif 149 150 #ifdef TC_TIC54X 151 #include "coff/tic54x.h" 152 #define TARGET_FORMAT "coff1-c54x" 153 #endif 154 155 #ifdef TC_MCORE 156 #include "coff/mcore.h" 157 #ifndef TARGET_FORMAT 158 #define TARGET_FORMAT "pe-mcore" 159 #endif 160 #endif 161 162 #ifdef TE_PE 163 /* PE weak symbols need USE_UNIQUE. */ 164 #define USE_UNIQUE 1 165 166 #define obj_set_weak_hook pecoff_obj_set_weak_hook 167 #define obj_clear_weak_hook pecoff_obj_clear_weak_hook 168 #endif 169 170 #ifndef OBJ_COFF_MAX_AUXENTRIES 171 #define OBJ_COFF_MAX_AUXENTRIES 1 172 #endif 173 174 #define obj_symbol_new_hook coff_obj_symbol_new_hook 175 #define obj_symbol_clone_hook coff_obj_symbol_clone_hook 176 #define obj_read_begin_hook coff_obj_read_begin_hook 177 178 #include "bfd/libcoff.h" 179 180 #define OUTPUT_FLAVOR bfd_target_coff_flavour 181 182 /* Alter the field names, for now, until we've fixed up the other 183 references to use the new name. */ 184 #ifdef TC_I960 185 #define TC_SYMFIELD_TYPE symbolS * 186 #define sy_tc bal 187 #endif 188 189 #define OBJ_SYMFIELD_TYPE unsigned long 190 #define sy_obj sy_flags 191 192 /* We can't use the predefined section symbols in bfd/section.c, as 193 COFF symbols have extra fields. See bfd/libcoff.h:coff_symbol_type. */ 194 #ifndef obj_sec_sym_ok_for_reloc 195 #define obj_sec_sym_ok_for_reloc(SEC) ((SEC)->owner != 0) 196 #endif 197 198 #define SYM_AUXENT(S) \ 199 (&coffsymbol (symbol_get_bfdsym (S))->native[1].u.auxent) 200 #define SYM_AUXINFO(S) \ 201 (&coffsymbol (symbol_get_bfdsym (S))->native[1]) 202 203 /* The number of auxiliary entries. */ 204 #define S_GET_NUMBER_AUXILIARY(s) \ 205 (coffsymbol (symbol_get_bfdsym (s))->native->u.syment.n_numaux) 206 /* The number of auxiliary entries. */ 207 #define S_SET_NUMBER_AUXILIARY(s, v) (S_GET_NUMBER_AUXILIARY (s) = (v)) 208 209 /* True if a symbol name is in the string table, i.e. its length is > 8. */ 210 #define S_IS_STRING(s) (strlen (S_GET_NAME (s)) > 8 ? 1 : 0) 211 212 /* Auxiliary entry macros. SA_ stands for symbol auxiliary. */ 213 /* Omit the tv related fields. */ 214 /* Accessors. */ 215 216 #define SA_GET_SYM_TAGNDX(s) (SYM_AUXENT (s)->x_sym.x_tagndx.l) 217 #define SA_GET_SYM_LNNO(s) (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_lnno) 218 #define SA_GET_SYM_SIZE(s) (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_size) 219 #define SA_GET_SYM_FSIZE(s) (SYM_AUXENT (s)->x_sym.x_misc.x_fsize) 220 #define SA_GET_SYM_LNNOPTR(s) (SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_lnnoptr) 221 #define SA_GET_SYM_ENDNDX(s) (SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_endndx) 222 #define SA_GET_SYM_DIMEN(s,i) (SYM_AUXENT (s)->x_sym.x_fcnary.x_ary.x_dimen[(i)]) 223 #define SA_GET_FILE_FNAME(s) (SYM_AUXENT (s)->x_file.x_fname) 224 #define SA_GET_SCN_SCNLEN(s) (SYM_AUXENT (s)->x_scn.x_scnlen) 225 #define SA_GET_SCN_NRELOC(s) (SYM_AUXENT (s)->x_scn.x_nreloc) 226 #define SA_GET_SCN_NLINNO(s) (SYM_AUXENT (s)->x_scn.x_nlinno) 227 228 #define SA_SET_SYM_LNNO(s,v) (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_lnno = (v)) 229 #define SA_SET_SYM_SIZE(s,v) (SYM_AUXENT (s)->x_sym.x_misc.x_lnsz.x_size = (v)) 230 #define SA_SET_SYM_FSIZE(s,v) (SYM_AUXENT (s)->x_sym.x_misc.x_fsize = (v)) 231 #define SA_SET_SYM_LNNOPTR(s,v) (SYM_AUXENT (s)->x_sym.x_fcnary.x_fcn.x_lnnoptr = (v)) 232 #define SA_SET_SYM_DIMEN(s,i,v) (SYM_AUXENT (s)->x_sym.x_fcnary.x_ary.x_dimen[(i)] = (v)) 233 #define SA_SET_FILE_FNAME(s,v) strncpy (SYM_AUXENT (s)->x_file.x_fname, (v), FILNMLEN) 234 #define SA_SET_SCN_SCNLEN(s,v) (SYM_AUXENT (s)->x_scn.x_scnlen = (v)) 235 #define SA_SET_SCN_NRELOC(s,v) (SYM_AUXENT (s)->x_scn.x_nreloc = (v)) 236 #define SA_SET_SCN_NLINNO(s,v) (SYM_AUXENT (s)->x_scn.x_nlinno = (v)) 237 238 /* Internal use only definitions. SF_ stands for symbol flags. 239 240 These values can be assigned to sy_symbol.ost_flags field of a symbolS. 241 242 You'll break i960 if you shift the SYSPROC bits anywhere else. for 243 more on the balname/callname hack, see tc-i960.h. b.out is done 244 differently. */ 245 246 #define SF_I960_MASK 0x000001ff /* Bits 0-8 are used by the i960 port. */ 247 #define SF_SYSPROC 0x0000003f /* bits 0-5 are used to store the sysproc number. */ 248 #define SF_IS_SYSPROC 0x00000040 /* bit 6 marks symbols that are sysprocs. */ 249 #define SF_BALNAME 0x00000080 /* bit 7 marks BALNAME symbols. */ 250 #define SF_CALLNAME 0x00000100 /* bit 8 marks CALLNAME symbols. */ 251 252 #define SF_NORMAL_MASK 0x0000ffff /* bits 12-15 are general purpose. */ 253 254 #define SF_STATICS 0x00001000 /* Mark the .text & all symbols. */ 255 #define SF_DEFINED 0x00002000 /* Symbol is defined in this file. */ 256 #define SF_STRING 0x00004000 /* Symbol name length > 8. */ 257 #define SF_LOCAL 0x00008000 /* Symbol must not be emitted. */ 258 259 #define SF_DEBUG_MASK 0xffff0000 /* bits 16-31 are debug info. */ 260 261 #define SF_FUNCTION 0x00010000 /* The symbol is a function. */ 262 #define SF_PROCESS 0x00020000 /* Process symbol before write. */ 263 #define SF_TAGGED 0x00040000 /* Is associated with a tag. */ 264 #define SF_TAG 0x00080000 /* Is a tag. */ 265 #define SF_DEBUG 0x00100000 /* Is in debug or abs section. */ 266 #define SF_GET_SEGMENT 0x00200000 /* Get the section of the forward symbol. */ 267 /* All other bits are unused. */ 268 269 /* Accessors. */ 270 #define SF_GET(s) (* symbol_get_obj (s)) 271 #define SF_GET_DEBUG(s) (symbol_get_bfdsym (s)->flags & BSF_DEBUGGING) 272 #define SF_SET_DEBUG(s) (symbol_get_bfdsym (s)->flags |= BSF_DEBUGGING) 273 #define SF_GET_NORMAL_FIELD(s) (SF_GET (s) & SF_NORMAL_MASK) 274 #define SF_GET_DEBUG_FIELD(s) (SF_GET (s) & SF_DEBUG_MASK) 275 #define SF_GET_FILE(s) (SF_GET (s) & SF_FILE) 276 #define SF_GET_STATICS(s) (SF_GET (s) & SF_STATICS) 277 #define SF_GET_DEFINED(s) (SF_GET (s) & SF_DEFINED) 278 #define SF_GET_STRING(s) (SF_GET (s) & SF_STRING) 279 #define SF_GET_LOCAL(s) (SF_GET (s) & SF_LOCAL) 280 #define SF_GET_FUNCTION(s) (SF_GET (s) & SF_FUNCTION) 281 #define SF_GET_PROCESS(s) (SF_GET (s) & SF_PROCESS) 282 #define SF_GET_TAGGED(s) (SF_GET (s) & SF_TAGGED) 283 #define SF_GET_TAG(s) (SF_GET (s) & SF_TAG) 284 #define SF_GET_GET_SEGMENT(s) (SF_GET (s) & SF_GET_SEGMENT) 285 #define SF_GET_I960(s) (SF_GET (s) & SF_I960_MASK) /* Used by i960. */ 286 #define SF_GET_BALNAME(s) (SF_GET (s) & SF_BALNAME) /* Used by i960. */ 287 #define SF_GET_CALLNAME(s) (SF_GET (s) & SF_CALLNAME) /* Used by i960. */ 288 #define SF_GET_IS_SYSPROC(s) (SF_GET (s) & SF_IS_SYSPROC) /* Used by i960. */ 289 #define SF_GET_SYSPROC(s) (SF_GET (s) & SF_SYSPROC) /* Used by i960. */ 290 291 /* Modifiers. */ 292 #define SF_SET(s,v) (SF_GET (s) = (v)) 293 #define SF_SET_NORMAL_FIELD(s,v)(SF_GET (s) |= ((v) & SF_NORMAL_MASK)) 294 #define SF_SET_DEBUG_FIELD(s,v) (SF_GET (s) |= ((v) & SF_DEBUG_MASK)) 295 #define SF_SET_FILE(s) (SF_GET (s) |= SF_FILE) 296 #define SF_SET_STATICS(s) (SF_GET (s) |= SF_STATICS) 297 #define SF_SET_DEFINED(s) (SF_GET (s) |= SF_DEFINED) 298 #define SF_SET_STRING(s) (SF_GET (s) |= SF_STRING) 299 #define SF_SET_LOCAL(s) (SF_GET (s) |= SF_LOCAL) 300 #define SF_CLEAR_LOCAL(s) (SF_GET (s) &= ~SF_LOCAL) 301 #define SF_SET_FUNCTION(s) (SF_GET (s) |= SF_FUNCTION) 302 #define SF_SET_PROCESS(s) (SF_GET (s) |= SF_PROCESS) 303 #define SF_SET_TAGGED(s) (SF_GET (s) |= SF_TAGGED) 304 #define SF_SET_TAG(s) (SF_GET (s) |= SF_TAG) 305 #define SF_SET_GET_SEGMENT(s) (SF_GET (s) |= SF_GET_SEGMENT) 306 #define SF_SET_I960(s,v) (SF_GET (s) |= ((v) & SF_I960_MASK)) /* Used by i960. */ 307 #define SF_SET_BALNAME(s) (SF_GET (s) |= SF_BALNAME) /* Used by i960. */ 308 #define SF_SET_CALLNAME(s) (SF_GET (s) |= SF_CALLNAME) /* Used by i960. */ 309 #define SF_SET_IS_SYSPROC(s) (SF_GET (s) |= SF_IS_SYSPROC) /* Used by i960. */ 310 #define SF_SET_SYSPROC(s,v) (SF_GET (s) |= ((v) & SF_SYSPROC)) /* Used by i960. */ 311 312 313 /* Line number handling. */ 314 extern int text_lineno_number; 315 extern int coff_line_base; 316 extern int coff_n_line_nos; 317 extern symbolS *coff_last_function; 318 319 #define obj_emit_lineno(WHERE, LINE, FILE_START) abort () 320 #define obj_app_file(name, app) c_dot_file_symbol (name, app) 321 #define obj_frob_symbol(S,P) coff_frob_symbol (S, & P) 322 #define obj_frob_section(S) coff_frob_section (S) 323 #define obj_frob_file_after_relocs() coff_frob_file_after_relocs () 324 #ifndef obj_adjust_symtab 325 #define obj_adjust_symtab() coff_adjust_symtab () 326 #endif 327 328 /* Forward the segment of a forwarded symbol, handle assignments that 329 just copy symbol values, etc. */ 330 #ifndef OBJ_COPY_SYMBOL_ATTRIBUTES 331 #ifndef TE_I386AIX 332 #define OBJ_COPY_SYMBOL_ATTRIBUTES(dest, src) \ 333 (SF_GET_GET_SEGMENT (dest) \ 334 ? (S_SET_SEGMENT (dest, S_GET_SEGMENT (src)), 0) \ 335 : 0) 336 #else 337 #define OBJ_COPY_SYMBOL_ATTRIBUTES(dest, src) \ 338 (SF_GET_GET_SEGMENT (dest) && S_GET_SEGMENT (dest) == SEG_UNKNOWN \ 339 ? (S_SET_SEGMENT (dest, S_GET_SEGMENT (src)), 0) \ 340 : 0) 341 #endif 342 #endif 343 344 /* Sanity check. */ 345 346 #ifdef TC_I960 347 #ifndef C_LEAFSTAT 348 hey ! Where is the C_LEAFSTAT definition ? i960 - coff support is depending on it. 349 #endif /* no C_LEAFSTAT */ 350 #endif /* TC_I960 */ 351 352 extern const pseudo_typeS coff_pseudo_table[]; 353 354 #ifndef obj_pop_insert 355 #define obj_pop_insert() pop_insert (coff_pseudo_table) 356 #endif 357 358 /* In COFF, if a symbol is defined using .def/.val SYM/.endef, it's OK 359 to redefine the symbol later on. This can happen if C symbols use 360 a prefix, and a symbol is defined both with and without the prefix, 361 as in start/_start/__start in gcc/libgcc1-test.c. */ 362 #define RESOLVE_SYMBOL_REDEFINITION(sym) \ 363 (SF_GET_GET_SEGMENT (sym) \ 364 ? (sym->sy_frag = frag_now, \ 365 S_SET_VALUE (sym, frag_now_fix ()), \ 366 S_SET_SEGMENT (sym, now_seg), \ 367 0) \ 368 : 0) 369 370 /* Stabs in a coff file go into their own section. */ 371 #define SEPARATE_STAB_SECTIONS 1 372 373 /* We need 12 bytes at the start of the section to hold some initial 374 information. */ 375 #define INIT_STAB_SECTION(seg) obj_coff_init_stab_section (seg) 376 377 /* Store the number of relocations in the section aux entry. */ 378 #define SET_SECTION_RELOCS(sec, relocs, n) \ 379 SA_SET_SCN_NRELOC (section_symbol (sec), n) 380 381 #define obj_app_file(name, app) c_dot_file_symbol (name, app) 382 383 extern int S_SET_DATA_TYPE (symbolS *, int); 384 extern int S_SET_STORAGE_CLASS (symbolS *, int); 385 extern int S_GET_STORAGE_CLASS (symbolS *); 386 extern void SA_SET_SYM_ENDNDX (symbolS *, symbolS *); 387 extern void coff_add_linesym (symbolS *); 388 extern void c_dot_file_symbol (const char *, int); 389 extern void coff_frob_symbol (symbolS *, int *); 390 extern void coff_adjust_symtab (void); 391 extern void coff_frob_section (segT); 392 extern void coff_adjust_section_syms (bfd *, asection *, void *); 393 extern void coff_frob_file_after_relocs (void); 394 extern void coff_obj_symbol_new_hook (symbolS *); 395 extern void coff_obj_symbol_clone_hook (symbolS *, symbolS *); 396 extern void coff_obj_read_begin_hook (void); 397 #ifdef TE_PE 398 extern void pecoff_obj_set_weak_hook (symbolS *); 399 extern void pecoff_obj_clear_weak_hook (symbolS *); 400 #endif 401 extern void obj_coff_section (int); 402 extern segT obj_coff_add_segment (const char *); 403 extern void obj_coff_section (int); 404 extern void c_dot_file_symbol (const char *, int); 405 extern segT s_get_segment (symbolS *); 406 #ifndef tc_coff_symbol_emit_hook 407 extern void tc_coff_symbol_emit_hook (symbolS *); 408 #endif 409 extern void obj_coff_pe_handle_link_once (void); 410 extern void obj_coff_init_stab_section (segT); 411 extern void c_section_header (struct internal_scnhdr *, 412 char *, long, long, long, long, 413 long, long, long, long); 414 #endif /* OBJ_FORMAT_H */ 415